Healthcare Analytics Final Exam
Questions with Correct
Solutions||100% Guaranteed
Pass||Updated 2026/2027
Syllabus||<<RECENT VERSION>>
Which of the following is an assumption made regarding the residuals in least
squares regression? - ANSWER ✓ The mean is zero, They are independent, . They
are approximately normally distributed
If the correlation between years of experience and salary is positive, what can you
conclude about the slope of a regression line that might be fit to describe the
relationship? - ANSWER ✓ the slope will be positive
If the least squares regression line modeling wait time as a function of the number
of surgeries scheduled is Y = 10 + 5 * X. Where Y is wait time and X is the
number of surgeries. What is the predicted wait time for patients on a day when
there are 12 surgeries scheduled? - ANSWER ✓ 70
If the test statistic for testing the null hypothesis that the correlation between
patient height and weight is 2.89 based on a sample of size 30 with an alpha of
0.05. What should the analyst conclude - ANSWER ✓ reject the null hypothesis
. If the least squares regression line modeling wait time as a function of the
number of surgeries scheduled is Y = 10 + 5 * X. Where Y is wait time and X is
the number of surgeries. If the actual wait time for a patient scheduled on a day
with 4 surgeries is 34 minutes, what is the residual for that patient? - ANSWER ✓
4
If we change sample size from 10 to 100 and all other statistics remain the same,
then how is the confidence interval changed? - ANSWER ✓ the interval will be
narrower
, What is a random number seed? - ANSWER ✓ The starting point for the random
number generator
A sample of medical records is selected by randomly selecting all records from
hospitals selected at random. What type of sampling is this? - ANSWER ✓ a
simple random sampling
If an analyst wishes to determine the root cause of claim denials during June 2013
via a random sample, what is the sampling unit? - ANSWER ✓ claim
Which of the following may be the variable of interest for a variable study? -
ANSWER ✓ Wait time in a clinic
Which of the following may be the variable of interest in an attribute study? -
ANSWER ✓ claim denial rate
The HIM director asks an analyst to determine the appropriate sample size to use
to estimate the time to code inpatient records in his department. What piece(s) of
information must the analyst determine? - ANSWER ✓ The desired precision of
the estimate, The desired confidence level for the estimate,
The historical variance in coding times
A sampling technique that divides the population into subsets and then selects a
random sample within each subset is called: - ANSWER ✓ a stratified random
sampling
Under what circumstances is it acceptable to use a non-probability sample for an
audit? - ANSWER ✓ When not generalizing to the population
Which of the follow attributes is required for a sample to be statistically valid? -
ANSWER ✓ it must be reproducible
If a sample size of 3 is to be selected from a population of 20 using systematic
random sampling, the analysis should select every ___ observation. - ANSWER ✓
6
In order to increase the precision of a confidence interval and leave the confidence
level the same, the sample size must be: - ANSWER ✓ large
Questions with Correct
Solutions||100% Guaranteed
Pass||Updated 2026/2027
Syllabus||<<RECENT VERSION>>
Which of the following is an assumption made regarding the residuals in least
squares regression? - ANSWER ✓ The mean is zero, They are independent, . They
are approximately normally distributed
If the correlation between years of experience and salary is positive, what can you
conclude about the slope of a regression line that might be fit to describe the
relationship? - ANSWER ✓ the slope will be positive
If the least squares regression line modeling wait time as a function of the number
of surgeries scheduled is Y = 10 + 5 * X. Where Y is wait time and X is the
number of surgeries. What is the predicted wait time for patients on a day when
there are 12 surgeries scheduled? - ANSWER ✓ 70
If the test statistic for testing the null hypothesis that the correlation between
patient height and weight is 2.89 based on a sample of size 30 with an alpha of
0.05. What should the analyst conclude - ANSWER ✓ reject the null hypothesis
. If the least squares regression line modeling wait time as a function of the
number of surgeries scheduled is Y = 10 + 5 * X. Where Y is wait time and X is
the number of surgeries. If the actual wait time for a patient scheduled on a day
with 4 surgeries is 34 minutes, what is the residual for that patient? - ANSWER ✓
4
If we change sample size from 10 to 100 and all other statistics remain the same,
then how is the confidence interval changed? - ANSWER ✓ the interval will be
narrower
, What is a random number seed? - ANSWER ✓ The starting point for the random
number generator
A sample of medical records is selected by randomly selecting all records from
hospitals selected at random. What type of sampling is this? - ANSWER ✓ a
simple random sampling
If an analyst wishes to determine the root cause of claim denials during June 2013
via a random sample, what is the sampling unit? - ANSWER ✓ claim
Which of the following may be the variable of interest for a variable study? -
ANSWER ✓ Wait time in a clinic
Which of the following may be the variable of interest in an attribute study? -
ANSWER ✓ claim denial rate
The HIM director asks an analyst to determine the appropriate sample size to use
to estimate the time to code inpatient records in his department. What piece(s) of
information must the analyst determine? - ANSWER ✓ The desired precision of
the estimate, The desired confidence level for the estimate,
The historical variance in coding times
A sampling technique that divides the population into subsets and then selects a
random sample within each subset is called: - ANSWER ✓ a stratified random
sampling
Under what circumstances is it acceptable to use a non-probability sample for an
audit? - ANSWER ✓ When not generalizing to the population
Which of the follow attributes is required for a sample to be statistically valid? -
ANSWER ✓ it must be reproducible
If a sample size of 3 is to be selected from a population of 20 using systematic
random sampling, the analysis should select every ___ observation. - ANSWER ✓
6
In order to increase the precision of a confidence interval and leave the confidence
level the same, the sample size must be: - ANSWER ✓ large
